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Finding the Fourth Proportional to 20,378.71, 30,570.79 and 8,063.83

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Solution

The fourth proportional to 20,378.71, 30,570.79 and 8,063.83 is: 12,096.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,378.71 : 30,570.79 = 8,063.83 : x
  2. Step 2: Convert to fraction form
    20,378.71/30,570.79 = 8,063.83/x
  3. Step 3: Cross multiply
    20,378.71x = 30,570.79 × 8,063.83
  4. Step 4: Simplify right side
    20,378.71x = 246,517,613.21
  5. Step 5: Solve for x
    x = 246,517,613.21/20,378.71
  6. Step 6: Final answer
    x = 12,096.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.